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Examinations directed to characterization within the framework of spectroscopic and DFT approach on the structural isomer of the pyridine substituted thiazole. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Inhibitory Properties of Aldehydes and Related Compounds against Phytophthora infestans-Identification of a New Lead. Pathogens 2020; 9:pathogens9070542. [PMID: 32645837 PMCID: PMC7400633 DOI: 10.3390/pathogens9070542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/01/2020] [Accepted: 07/03/2020] [Indexed: 11/16/2022] Open
Abstract
The pathogen Phytophthora infestans is responsible for catastrophic crop damage on a global scale which totals billions of euros annually. The discovery of new inhibitors of this organism is of paramount agricultural importance and of critical relevance to food security. Current strategies for crop treatment are inadequate with the emergence of resistant strains and problematic toxicity. Natural products such as cinnamaldehyde have been reported to have fungicidal properties and are the seed for many new discovery research programmes. We report a probe of the cinnamaldehyde framework to investigate the aldehyde subunit and its role in a subset of aromatic aldehydes in order to identify new lead compounds to act against P. infestans. An ellipticine derivative which incorporates an aldehyde (9-formyl-6-methyl ellipticine, 34) has been identified with exceptional activity versus P. infestans with limited toxicity and potential for use as a fungicide.
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Diab M, Mohamed GG, Mahmoud W, El‐Sonbati A, Morgan S, Abbas S. Inner metal complexes of tetradentate Schiff base: Synthesis, characterization, biological activity and molecular docking studies. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4945] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- M.A. Diab
- Chemistry Department, Faculty of ScienceDamietta University Egypt
| | - Gehad G. Mohamed
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
- Egypt Nanotechnology CenterCairo University El‐Sheikh Zayed, 6th October 12588 Egypt
| | - W.H. Mahmoud
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | - A.Z. El‐Sonbati
- Chemistry Department, Faculty of ScienceDamietta University Egypt
| | - Sh.M. Morgan
- Environmental Monitoring Laboratories, Ministry of Health Port Said Egypt
| | - S.Y. Abbas
- Chemistry Department, Faculty of ScienceDamietta University Egypt
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Khamees HA, Mohammed YHE, Swamynayaka A, Al‐Ostoot FH, Sert Y, Alghamdi S, Khanum SA, Madegowda M. Molecular Structure, DFT, Vibrational Spectra with Fluorescence Effect, Hirshfeld Surface, Docking Simulation and Antioxidant Activity of Thiazole Derivative. ChemistrySelect 2019. [DOI: 10.1002/slct.201900646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hussien A. Khamees
- Department of Studies in PhysicsManasagangotriUniversity of Mysore Mysuru-570006, Karnataka India
| | - Yasser H. E. Mohammed
- Department of ChemistryYuvaraja's CollegeUniversity of Mysore Mysuru- 570005 Karnataka India
- Department of BiochemistryFaculty of Applied Science CollegeUniversity of Hajjah Yemen
| | - Ananda Swamynayaka
- Department of Studies in PhysicsManasagangotriUniversity of Mysore Mysuru-570006, Karnataka India
| | - Fares H. Al‐Ostoot
- Department of ChemistryYuvaraja's CollegeUniversity of Mysore Mysuru- 570005 Karnataka India
- Department of BiochemistryFaculty of Education & ScienceUniversity of Albaydaa Yemen
| | - Yusuf Sert
- Sorgun Vocational SchoolBozok University 66100, Yozgat Turkey
| | - Saad Alghamdi
- Laboratory Medicine Departmentfaculty of Applied Medical ScienceUmm Al-Qura University, Makkah Saudi Arabia
| | - Shaukath A. Khanum
- Department of ChemistryYuvaraja's CollegeUniversity of Mysore Mysuru- 570005 Karnataka India
| | - Mahendra Madegowda
- Department of Studies in PhysicsManasagangotriUniversity of Mysore Mysuru-570006, Karnataka India
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Rahmani R, Djafri A, Chouaih A, Djafri A, Hamzaoui F, Rizzi R, Altomare A. Synthesis, molecular and solid state structure of 5-(5-nitro furan-2-ylmethylen), 3- N -(2-methoxy phenyl), 2- N ′-(2-methoxyphenyl) imino thiazolidin-4-one: X-ray powder diffraction and DFT studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.04.091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Zayed EM, Zayed MA, Fahim AM, El-Samahy FA. Synthesis of novel macrocyclic Schiff's-base and its complexes having N2
O2
group of donor atoms. Characterization and anticancer screening are studied. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3694] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ehab M. Zayed
- Green Chemistry Department; Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
| | - Mohamed A. Zayed
- Chemistry Department, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Asmaa M. Fahim
- Green Chemistry Department; Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
| | - Fatma A. El-Samahy
- Green Chemistry Department; Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
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Mahmoodi NO, Ghanbari Pirbasti F. Overview on the recently developed thiazolyl heterocycles as useful therapeutic agents. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1119143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Nosrat O. Mahmoodi
- Department of Chemistry, Faculty of Science, University of Guilan, Rasht, I. R. Iran
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Syntheses, spectroscopic investigation and electronic properties of two sulfonamide derivatives: A combined experimental and quantum chemical approach. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.12.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Singh RN, Rawat P, Sahu S, Kumar Y. Antimicrobial activity, structural evaluation and vibrational (FT-IR and FT-Raman) study of pyrrole containing vinyl derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 154:47-57. [PMID: 26513227 DOI: 10.1016/j.saa.2015.09.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 09/17/2015] [Accepted: 09/27/2015] [Indexed: 06/05/2023]
Abstract
In this paper we present structural and vibrational study of three vinylpyrrole derivatives: 2-Cyano-3-(1H-pyrrol-2-yl)-acrylamide (CPA), 1-(1H-Pyrrol-2-yl)-Pent-1-en-3-one (PP) and 1-(1H-Pyrrol-2-yl)-but-1-en-3-one (PB), using ab initio, DFT and experimental approaches. The quantum chemical calculation have been performed on B3LYP method and 6-311+G(d,p) basis set. The experimental FT-IR and Raman wavenumbers were compared with the respective theoretical values obtained from DFT calculations and found to agree well. The experimental FT-IR and Raman study clearly indicate that the compound exist as dimer in solid state. The binding energies of (CPA), (PP) and (PB) dimers are found to be 20.95, 18.75 and 19.18 kcal/mol, respectively. The vibrational analysis shows red shifts in v(N-H) and v(C=O) stretching as result of dimer formation. Stability of the molecule arising from hyperconjugative interactions and charge delocalization has been analyzed using NBO analysis. Topological and energetic parameters reveal the nature of interactions in dimer. The local electronic descriptors analyses were used to predict the reactive sites in the molecule. Calculated first static hyperpolarizability of CPA, PP and PB is found to be 10.41×10(-30), 18.93×10(-30), 18.29×10(-30) esu, respectively, shows that investigated molecules will have non-linear optical response and might be used as non-linear optical (NLO) material. These vinylpyrrole compounds (CPA), (PP) and (PB) showed antifungal and antibacterial activity against Aspergillus niger and gram-positive bacteria Bacillus subtili.
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Affiliation(s)
- R N Singh
- Department of Chemistry, University of Lucknow, Lucknow 226007, U.P., India.
| | - Poonam Rawat
- Department of Chemistry, University of Lucknow, Lucknow 226007, U.P., India
| | - Sangeeta Sahu
- Department of Chemistry, University of Lucknow, Lucknow 226007, U.P., India
| | - Yashvinder Kumar
- Department of Chemistry, University of Lucknow, Lucknow 226007, U.P., India
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Ghanbari Pirbasti F, Mahmoodi NO. Facile synthesis and biological assays of novel 2,4-disubstituted hydrazinyl-thiazoles analogs. Mol Divers 2016; 20:497-506. [DOI: 10.1007/s11030-015-9654-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 12/29/2015] [Indexed: 12/31/2022]
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Tahtaci H, Er M, Karakurt T, Onaran A. Synthesis, Structural Characterization, and Biological Evaluation of Novel Substituted 1,3-Thiazole Derivatives Containing Schiff Bases. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2565] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hakan Tahtaci
- Department of Polymer Engineering, Faculty of Technology; Karabük University; 78050 Karabük Turkey
| | - Mustafa Er
- Department of Chemical Engineering, Faculty of Engineering; Karabük University; 78050 Karabük Turkey
| | - Tuncay Karakurt
- Department of Chemical Engineering, Faculty of Engineering and Architecture; Ahi Evran University; 40100 Kırşehir Turkey
| | - Abdurrahman Onaran
- Department of Plant Protection, Faculty of Agriculture; Ahi Evran University; 40100 Kırşehir Turkey
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Mohamed GG, Zayed EM, Hindy AMM. Coordination behavior of new bis Schiff base ligand derived from 2-furan carboxaldehyde and propane-1,3-diamine. Spectroscopic, thermal, anticancer and antibacterial activity studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 145:76-84. [PMID: 25767990 DOI: 10.1016/j.saa.2015.01.129] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 01/18/2015] [Accepted: 01/29/2015] [Indexed: 06/04/2023]
Abstract
Novel bis Schiff base ligand, [N1,N3-bis(furan-2-ylmethylene)propane-1,3-diamine], was prepared by the condensation of furan-2-carboxaldehyde with propane-1,3-diamine. Its conformational changes on complexation with transition metal ions [Co(II), Ni(II), Cu(II), Mn(II), Cd(II), Zn(II) and Fe(III)] have been studied on the basis of elemental analysis, conductivity measurements, spectral (infrared, (1)H NMR, electronic), magnetic and thermogravimetric studies. The conductance data of the complexes revealed their electrolytic nature suggesting them as 1:2 (for bivalent metal ions) and 1:3 (for Fe(III) ion) electrolytes. The complexes were found to have octahedral geometry based on magnetic moment and solid reflectance measurements. Thermal analysis data revealed the decomposition of the complexes in successive steps with the removal of anions, coordinated water and bis Schiff base ligand. The thermodynamic parameters were calculated using Coats-Redfern equation. The Anticancer screening studies were performed on human colorectal cancer (HCT), hepatic cancer (HepG2) and breast cancer (MCF-7) cell lines. The antimicrobial activity of all the compounds was studied against Gram negative (Escherichia coli and Proteus vulgaris) and Gram positive (Bacillus vulgaris and Staphylococcus pyogones) bacteria. It was observed that the coordination of metal ion has a pronounced effect on the microbial activities of the bis Schiff base ligand. All the metal complexes have shown higher antimicrobial effect than the free bis Schiff base ligand.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | - Ehab M Zayed
- Green Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt
| | - Ahmed M M Hindy
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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Zayed EM, Zayed MA. Synthesis of novel Schiff's bases of highly potential biological activities and their structure investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 143:81-90. [PMID: 25721778 DOI: 10.1016/j.saa.2015.02.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 12/09/2014] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
Novel bisaldehyde-hydrazide Schiff's bases AS1 (2,2'-(ethane-1,2-diylbis(oxy))dibenzaldehyde terephthalohydrazide) and AS2 (N',N'″-(((ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(methanylylidene))di(benzohydrazide)) were prepared as new macrocyclic compounds via condensation reactions. AS1 had been prepared by condensation between (2,2'-(ethane-1,2-diylbis(oxy))dibenzaldehyde) bisaldehyde and terephthalohydrazide in a ratio1:1. AS2 had been obtained by condensation between (2,2'-(ethane-1,2-diylbis(oxy))dibenzaldehyde) bisaldehyde and benzohydrazide in ratio 1:2. The structures of AS1 and AS2 were characterized by elemental analysis (EA), mass (MS), FT-IR and (1)H-NMR spectra, and thermal analyses (TG, DTG). The activation thermodynamic parameters such as ΔE(∗), ΔH(∗), ΔS(∗) and ΔG(∗) were calculated from the TG curves using Coats-Redfern method. It is important to investigate their molecular structures to know the active groups and weak bonds responsible for their biological activities. Consequently in the present work, the obtained thermal (TA) and mass (MS) practical results are confirmed by semi-empirical MO-calculations (MOCS) using PM3 procedure. Their biological activities had been tested in vitro against Escherichia coli, Proteus vulgaris, Bacillus subtilis and Staphylococcus aurous bacteria in order to assess their anti-microbial potential.
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Affiliation(s)
- Ehab M Zayed
- Green Chemistry Department, National Research Centre, Dokki, 12622 Giza, Egypt
| | - M A Zayed
- Chemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt.
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Anbazhagan R, Sankaran KR. Design, synthesis, computational calculation and biological evaluation of some novel 2-thiazolyl hydrazones. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:984-993. [PMID: 25168236 DOI: 10.1016/j.saa.2014.06.160] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 06/25/2014] [Accepted: 06/27/2014] [Indexed: 06/03/2023]
Abstract
In the present study a novel series of 1-(1-(4-isobutylphenyl)ethylidene)-2-(4-phenylthiazol-2-yl)hydrazine 2a and its derivatives 2b-2f have been synthesized by the cyclization of 1-(1-(4-isobutylphenyl)ethylidene)thiosemicarbazide with 2-bromoacetophenone/ 4-substituted 2-bromoacetophenones. The structures of the synthesized thiazolyl hydrazones 2a-2f were characterized by FT-IR, (1)H, (13)C NMR, 2D NMR and mass spectral techniques. The molecular geometries were also investigated theoretically using B3LYP functional with 6-311G(d,p) basis set. To explain the molecular properties energy gap (Eg), electronegativity (χ), hardness (g), electrophilicity (ω) and softness (S) were computed, natural bonding orbital (NBO) analysis and molecular electrostatic potential (MEP) were also performed at the same level of theory. All the synthesized thiazolyl hydrazones 2a-2f were screened for their in vitro antimicrobial activity against selected bacterial and fungal strains. The results showed that the heterocyclic thiazolyl hydrazone derivatives exhibit a promising selective inhibitory activity against various bacterial and fungal strains.
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Affiliation(s)
- R Anbazhagan
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - K R Sankaran
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India.
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Scotti L, Ishiki H, Junior FJM, Santos PF, Tavares JF, Silva MS, Scotti MT. Theoretical Research into Anticancer Activity of Diterpenes Isolated from the Paraiban Flora. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Many studies of the scientific literature discuss the anticancer activity of diterpenes inhibiting the Akt/IKK/NF-κB pro-survival signaling cascade, mainly by the activation of serine/threonine phosphatase PP2A. The aim of this work was to evaluate and compare the anticancer potential of three atisane, three kaurane and three trachylobane diterpenes extracted from the roots of Xylopia langsdorffiana. Thus, we investigated the reactivity (H-LGAP parameter), HOMO atmosphere favorable to neutralize the radical reactivity, and the docking of compounds with PP2A. With all approaches, this theoretical study showed that atisane diterpenes have favorable characteristics for antitumor activity, like electron donating ability and greater hydrophilic interactions with the enzyme, by inhibition of Akt/IKK/NF-κB, and activation of PP2A.
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Affiliation(s)
- Luciana Scotti
- Federal University of Paraíba, Campus I, João Pessoa-PB, Brazil
| | - Hamilton Ishiki
- Federal University of Paraíba, Campus IV, 58297-000, Rio Tinto-PB, Brazil
| | | | - Paula F. Santos
- Federal University of Paraíba, Campus I, João Pessoa-PB, Brazil
| | | | | | - Marcus T. Scotti
- State University of Paraiba, Biological Science Department, Laboratory of Synthesis and Drug Delivery, 58070-450, João Pessoa, PB, Brazil
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Zhang Z, Bi C, Fan Y, Zhang X, Zhang N, Yan X, Zuo J. Crystal Structure, Fluorescence Property and Theoretical Calculation of the Zn(II) Complex with o-Aminobenzoic Acid and 1,10-Phenanthroline. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.6.1697] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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